How Long Does It Take for the Smell to Go Away After Replacing the Catalytic Converter?
1 Answers
After replacing the catalytic converter, the smell usually disappears within a week. The catalytic converter is an essential external purification device in the automobile exhaust system. Its function is to convert harmful gases such as carbon monoxide, hydrocarbons, and nitrogen oxides from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. The catalytic converter consists of a shell, a damping layer, a substrate, and a catalyst coating. The reasons for catalytic converter failure include: 1. Prolonged idling; 2. Delayed ignition timing; 3. Overly rich fuel mixture; 4. Engine oil burning; 5. Oxygen sensor failure; 6. Overheating due to incomplete cooling; 7. Switch cut-off while driving.